My personal belief is that God is the entity that created this Universe.  So, in that sense, God can be viewed as being the creator of everything we see around us; the planets, the stars, all things that exists in this Universe.  Of course, being from a scientific bent of mind, I have questioned the existence of a God many times in my life.  However, I've always come to the conclusion that God has to exist.  The Big Bang Theory leads one to believe that there was a starting point (a point when the Universe came into being). The fact that something triggered a small volume of matter to explode and expand out and fill in what we know as the Universe today is something one can't get one's head around.

Why did that first singularity (or initial point) start?  Was someone controlling it?  If it was automated - who programmed it?  Can one imagine something starting and continuing and possibly contracting again on its own??  There has to be an entity (God) that controls or regulates all of this, or can one assume that this is just random madness?  Personally, I find it difficult to believe that all of this (creation of the Universe and the millions of other things that followed that creation) happened by chance or randomly. So, I do believe God has to exist and that God is the creator.

Personally, I do not think that God has any form.  In that respect, I don't think one can make any assertion on how He looks or could look.  I don't think we can look at God in the conventional sense - as in comparing it to the human situation.  I don't think God has any gender too, even though we primarily refer to God in the male form.

I think of God as being pure cosmic energy.  Just as energy can have no form, I don't think God has any form too.  Of course, its possible that God can assume multiple forms, including the human form.  So, perhaps a human would see God in human form.  Maybe an alien could see God in that particular alien species form.  So, I don't think God has a fixed form per se and therefore one cannot firmly say what God would look like.